CN206973523U - A kind of gasification of biomass coupling coal fired power generation gasification gas utilizes system - Google Patents
A kind of gasification of biomass coupling coal fired power generation gasification gas utilizes system Download PDFInfo
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- CN206973523U CN206973523U CN201720736013.4U CN201720736013U CN206973523U CN 206973523 U CN206973523 U CN 206973523U CN 201720736013 U CN201720736013 U CN 201720736013U CN 206973523 U CN206973523 U CN 206973523U
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- Prior art keywords
- water
- heat exchanger
- gasification
- gasification gas
- power generation
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Abstract
The utility model discloses a kind of gasification of biomass coupling coal fired power generation gasification gas to utilize system, including gasification gas heat exchanger, water circulating pump, height to add the heat exchanger that draws water, to water- to-water heat exchanger, flue gas heat-exchange unit；The gasification gas heat exchanger connection water circulating pump, the water circulating pump connects two-way, connection is high all the way adds the heat exchanger that draws water, another way is connected to water- to-water heat exchanger, described high plus draw water heat exchanger, the other end to water- to-water heat exchanger are all connected with flue gas heat-exchange unit, the other end connection gasification gas heat exchanger of flue gas heat-exchange unit.The beneficial effects of the utility model, the deep-step for realizing gasification gas sensible heat utilize, and add steam turbine amount of work during high load capacity, ensure that denitration efficiency during underload；And the heat medium water of gasification gas heating heating boiler after high plus draw water heater or feed-water heater is flowed through is discharged fume, and is lifted exhaust gas temperature, is reduced " gypsum rain " phenomenon, prevent chimney from corroding.
Description
Technical field
It the utility model is related to a kind of heat utilization system, more particularly to a kind of gasification of biomass coupling coal fired power generation gas
Change gas and utilize system.
Background technology
Gasification of biomass coupling coal fired power generation biomass gasifying furnace outlet gasification temperature degree is 700-750 DEG C or so, is considered
The temperature that can bear to fuel gas transportation pipeline, valve and annex, gasification gas must be cooled down first.Conventional heating boiler condensed water at present
Mode using gasifying sensible heat.
During coal-burning boiler heavy-duty service, outside heat heating height adds to water, and exclusion is high plus draws gas, and can increase steam turbine and do
Work, improve efficiency of generating unit.When boiler at low load is run, denitration input gas temperature is relatively low, it is impossible to ensures denitrating system height
Effect operation, heating feedwater, denitration input gas temperature can be improved by improving economizer import Temperature of Working, ensure that denitrating system is efficient
Operation.
Thermal generation unit is relatively low through flue gas after desulfurization temperature, and meeting " gypsum rain " phenomenon, chimney is easily corroded.Existing skill
Art heat transfer temperature difference is big, and energy utilization efficiency is than relatively low.
Utility model content
Technical problem to be solved in the utility model is the provision of a kind of different using the controlled atmosphere section coal-burning boiler that gasifies
The operational efficiency of load, reduce the gasification of biomass coupling coal fired power generation gasification gas that chimney is corroded and utilize system.
The utility model is that solve above-mentioned technical problem by the following technical programs：The utility model is included on pipeline
Gasification gas heat exchanger, the water circulating pump being sequentially connected, the water circulating pump connect two-way, and connection is high all the way adds the heat exchanger that draws water,
Another way is connected to water- to-water heat exchanger, and described high plus draw water heat exchanger, the other end to water- to-water heat exchanger are all connected with flue gas heat-exchange unit, cigarette
The other end connection gasification gas heat exchanger of gas heat exchanger.
Preferably, in addition to stop valve, stop valve one end connection water circulating pump, the other end connect two-way, and connection is high all the way
Add the heat exchanger that draws water, another way is connected to water- to-water heat exchanger.
Preferably, add to draw water in the height and the first regulating valve is set between heat exchanger and stop valve.
Preferably, described to setting the second regulating valve between water- to-water heat exchanger and stop valve.
Preferably, the 3rd regulating valve is set between flue gas heat-exchange unit and the high plus heat exchanger that draws water.
Preferably, in addition to one bypasses, and the 4th regulating valve is set in bypass, the 4th regulating valve is connected in parallel on the 3rd regulating valve
With flue gas heat-exchange unit both ends.
Preferably, the gasification gas heat exchanger, height add the heat exchanger that draws water, are surface to water- to-water heat exchanger, flue gas heat-exchange unit
Formula heat exchanger.
Preferably, the gasification gas heat exchanger is arranged in gasification feed channel.
Preferably, the flue gas heat-exchange unit is arranged in boiler exhaust gas pipe.
The utility model has advantages below compared with prior art：The utility model realizes the depth ladder of gasification gas sensible heat
Level utilizes, and adds steam turbine amount of work during high load capacity, ensure that denitration efficiency during underload；And the heat medium water of gasification gas heating exists
Heating boiler is discharged fume after flowing through high plus draw water heater or feed-water heater, is lifted exhaust gas temperature, is reduced " gypsum rain " phenomenon,
Prevent chimney from corroding.
Brief description of the drawings
Fig. 1 is the structural representation that a kind of gasification of biomass coupling coal fired power generation gasification gas of the utility model utilizes system.
2 stop valve of gasification gas 1 water circulating pump of heat exchanger 21 is high plus the regulating valve 31 of heat exchanger 3 first feedwater of drawing water is changed
The regulating valve 6 of 41 the 3rd regulating valve 51 of flue gas heat-exchange unit 5 of hot 4 second regulating valve of device the 4th
Embodiment
Embodiment of the present utility model is elaborated below, the present embodiment using technical solutions of the utility model before
Put and implemented, give detailed embodiment and specific operating process, but the scope of protection of the utility model is unlimited
In following embodiments.
As shown in figure 1, the present embodiment is included in gasification gas heat exchanger 1, the water circulating pump 2 being sequentially connected on pipeline, it is described
The connection two-way of water circulating pump 2, connection is high all the way plus the heat exchanger 3 that draws water, another way are connected to water- to-water heat exchanger 4, and the height, which adds, to draw water
Heat exchanger 3, the other end to water- to-water heat exchanger 4 are all connected with flue gas heat-exchange unit 5, and the other end connection gasification gas of flue gas heat-exchange unit 5 changes
Hot device 1.
Also include stop valve 21, the one end of stop valve 21 connection water circulating pump 2, other end connection two-way, connection is high all the way adds
Drawn water heat exchanger 3, and another way is connected to water- to-water heat exchanger 4.Add to draw water in the height and set first between heat exchanger 3 and stop valve 21
Regulating valve 31.Described to setting the second regulating valve 41 between water- to-water heat exchanger 4 and stop valve 21.Add in flue gas heat-exchange unit 5 with high
Draw water and the 3rd regulating valve 51 is set between heat exchanger 3.Also include a bypass, the 4th regulating valve 6, the 4th regulation are set in bypass
Valve 6 is connected in parallel on the 3rd regulating valve 51 and the both ends of flue gas heat-exchange unit 5.
The gasification gas heat exchanger 1, height add the heat exchanger 3 that draws water, are that surface-type changes to water- to-water heat exchanger 4, flue gas heat-exchange unit 5
Hot device.The gasification gas heat exchanger 1 is arranged in gasification feed channel.The flue gas heat-exchange unit 5 is arranged in boiler exhaust gas pipe.
Utility model works process is as follows：
Such as Fig. 1, hollow arrow show gasification stream to the gasification gas heat exchanger 1 is arranged in gasification feed channel, warp
Heat medium water after heat exchange enters two-way through water circulating pump 2 and stop valve 21, connects all the way into the high plus heat exchanger 3 that draws water, another way
Connect to water- to-water heat exchanger 4.Coal-burning boiler operationally, in high load capacity, can be closed according to operating load by the second regulating valve 41
Close feed-water heater 4, open the first regulating valve 31 and Gao Jia draws water heater 3, heating height adds to water, and exclusion steam turbine is high plus takes out
Vapour；In underload, the high plus heater 3 that draws water is closed by the first regulating valve 31, opens the second regulating valve 41 and feedwater heating
Device 4, heating feedwater, feed temperature is improved, and then improve denitration input gas temperature, realize wide load denitration.The gas that gasifies heats
Heat medium water after high plus draw water heater 3 or feed-water heater 4 is being flowed through heating boiler discharge fume, lift exhaust gas temperature, prevent cigarette
Chimney corrodes.
The deep-step that the utility model realizes gasification gas sensible heat utilizes, and adds steam turbine amount of work during high load capacity, low
Denitration efficiency is ensure that during load.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (9)
1. a kind of gasification of biomass coupling coal fired power generation gasification gas utilizes system, it is characterised in that including gasification gas heat exchanger, follows
Ring water pump, height add the heat exchanger that draws water, to water- to-water heat exchanger, flue gas heat-exchange unit；The gasification gas heat exchanger connection water circulating pump, it is described
Water circulating pump connects two-way, and connection is high all the way plus the heat exchanger that draws water, another way are connected to water- to-water heat exchanger, described high plus heat exchange of drawing water
Device, the other end to water- to-water heat exchanger are all connected with flue gas heat-exchange unit, the other end connection gasification gas heat exchanger of flue gas heat-exchange unit.
2. a kind of gasification of biomass coupling coal fired power generation gasification gas according to claim 1 utilizes system, it is characterised in that
Also include stop valve, stop valve one end connection water circulating pump, other end connection two-way, connection is high all the way adds the heat exchanger that draws water, separately
Connect all the way to water- to-water heat exchanger.
3. a kind of gasification of biomass coupling coal fired power generation gasification gas according to claim 2 utilizes system, it is characterised in that
Add to draw water in the height and the first regulating valve is set between heat exchanger and stop valve.
4. a kind of gasification of biomass coupling coal fired power generation gasification gas according to claim 2 utilizes system, it is characterised in that
Described to setting the second regulating valve between water- to-water heat exchanger and stop valve.
5. a kind of gasification of biomass coupling coal fired power generation gasification gas according to claim 1 utilizes system, it is characterised in that
The 3rd regulating valve is set between flue gas heat-exchange unit and the high plus heat exchanger that draws water.
6. a kind of gasification of biomass coupling coal fired power generation gasification gas according to claim 5 utilizes system, it is characterised in that
Also include a bypass, the 4th regulating valve is set in bypass, the 4th regulating valve is connected in parallel on the 3rd regulating valve and flue gas heat-exchange unit two
End.
7. a kind of gasification of biomass coupling coal fired power generation gasification gas according to claim 1 utilizes system, it is characterised in that
The gasification gas heat exchanger, height add the heat exchanger that draws water, are surface-type heat exchanger to water- to-water heat exchanger, flue gas heat-exchange unit.
8. a kind of gasification of biomass coupling coal fired power generation gasification gas according to claim 1 utilizes system, it is characterised in that
The gasification gas heat exchanger is arranged in gasification feed channel.
9. a kind of gasification of biomass coupling coal fired power generation gasification gas according to claim 1 utilizes system, it is characterised in that
The flue gas heat-exchange unit is arranged in boiler exhaust gas pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720736013.4U CN206973523U (en) | 2017-06-22 | 2017-06-22 | A kind of gasification of biomass coupling coal fired power generation gasification gas utilizes system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720736013.4U CN206973523U (en) | 2017-06-22 | 2017-06-22 | A kind of gasification of biomass coupling coal fired power generation gasification gas utilizes system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206973523U true CN206973523U (en) | 2018-02-06 |
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ID=61409138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720736013.4U Expired - Fee Related CN206973523U (en) | 2017-06-22 | 2017-06-22 | A kind of gasification of biomass coupling coal fired power generation gasification gas utilizes system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206973523U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139158A (en) * | 2018-08-06 | 2019-01-04 | 山东电力工程咨询院有限公司 | Utilize the system and method for biogas sensible heat and smoke evaporative emission reduction desulfurization wastewater |
-
2017
- 2017-06-22 CN CN201720736013.4U patent/CN206973523U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139158A (en) * | 2018-08-06 | 2019-01-04 | 山东电力工程咨询院有限公司 | Utilize the system and method for biogas sensible heat and smoke evaporative emission reduction desulfurization wastewater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180206 Termination date: 20180622 |